Planète en colère

Storm chaser George Kourounis visits Oklahoma City and chases a hail storm.

George Kourounis joins forces with R.J. Evans to track huge lightning storms in the American southwest.

Heading to the Congo, George Kourounis climbs the steep and active Nyiragongo volcano.

Wildfires burn across the Yukon and George heads north along the route taken to the Klondike Gold Rush.

It's autumn and the North Atlantic sees hurricanes while a forest fire burns in Northern Ontario.

George Kourounis visits Tornado Alley, descends into the Erta Ale volcano and witnesses the force of Hurricane Katrina.